/*
 * Copyright 2010-2016 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.serialization.js

import org.jetbrains.kotlin.psi.KtFile

class KotlinFileRegistry {
    private val fileIdsImpl = mutableMapOf<KtFile, Int>()

    fun lookup(file: KtFile) = fileIdsImpl.getOrPut(file) { fileIdsImpl.size }

    val fileIds: Map<KtFile, Int>
        get() = fileIdsImpl
}
